About:
I do a lot of soldering, so for obvious reasons I made this to remove all the harmfull smoke and fumes that come from melting solder. At my last place I had a window right infront of my workbench so I could just turn on the big box fan, but at this house I'm not so luckly. At least there is a window not too far away, so with tubing I can direct the fumes out the window. Basically I closed the window down on some pool hosing and stuffed all the gaps with foam blocks. This unit is quiet, runs long periods of time with low power consumption, and works great!
General Assembly:
The main unit uses two 6in computer fans. There is a 12v wall-wart power supply, a power control toggle switch, and the power cord came from an old broken vacuum sweeper. There is a nylon filter held with a custum fitted wood gasket to keep bugs from coming into the house. The intake hose is a flexible 4in x 4ft vinyle dryer duct. The intake port was a dryer hose connector that I snipped every inch or so to make mounting flaps. The exhaust port is a pvc connector hot glued directly to the housing.
Failed First Attempt:
This first design didn't work so well. Since the exhause hose was too small, the exhuast fan couldn't keep up with the intake fan, so the air just pulsed in circles and there was hardly any suction.
Functional 2nd Attempt:
This design proved much more functional. Stacking both fans created a more forceful sucking action. This also caused the main housing to build pressure, so I had to make the main housing air tight and the only way to do that was to shave off all the little tabs on the lid because they created an air gap. Once the tabs were removed, I could bolt the lid to the enclosure.
